Sega CDX/ Multi Mega

Posted by admin on February 10th, 2008


  • Model Number: MK-1601 (r1), MK-1631 (r2).
  • CPU: Motorola 68000 at 7.61 MHz
    • 1 MByte (8 Mbit) ROM Area
    • 64 KByte RAM Area
  • Co-Processor: Z80 @ 4 MHz (Not Present in MK-1631)
    • Controls PSG (Programmable Sound Generator) & FM Chips
    • 8 KBytes of dedicated Sound Ram
  • Graphics:
    • 64 simultaneous colors of 512 color pallete.
    • Pixel resolution: 320 x 224
    • VDP (Video Display Processor)
      • Dedicated video display processor
      • Controls playfield & sprites
      • 64 KBytes of dedicated VRAM (Video Ram)
      • 64 x 9-bits of CRAM (Color RAM)
    • 3 Planes: 2 scrolling playfields, 1 sprite plane
  • Sound:
    • PSG (TI 76489 chip)
    • FM chip (Yamaha YM 2612)
    • 6-channel stereo
    • 8 KBytes RAM
    • Signal/Noise Ratio: 14dB
  • No built-in screen.
  • Could function as a portable CD player. CD control buttons are on the front of the console. A back-lit LCD displayed the track number. An extra line out port was provided for stereo equipment.
  • Powered by 2 AA batteries when operated as a portable CD player. The unit must be powered by an AC adapter to play video games.

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